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Ansci Study Exam 2
| Question | Answer |
|---|---|
| What are the two functions of the MALE reproductive tract? | Produce viable spermatozoa and deliver it to the reproductive tract. |
| What organ produces testosterone and sperm cells? | the testes |
| Where do spermatozoa mature? | the epididymis |
| What cell produces testosterone? | leydig cells |
| What produces spermatozoa in the testicles? | The seminiferous tubules |
| What does the scrotum do? | Protects and regulates the temperature of the testes |
| What does the vas deferens do? | transports sperm cells |
| What does the urethra do? | Provides exit for urine and sperm |
| What do seminal vesicles do? | produces the major portion of fluids to add volume to the ejaculate |
| What does the bulbourethral gland do? | Secretes the gel portion of the ejaculate |
| What does the Ampulla do? | Allows for rapid ejaculation |
| What does the retractor penis muscle do? | Relaxes during mating to allow the sigmoidal flexure to straighten |
| Where are the testes located with poultry? | Inside the abdomen |
| Male poultry do not have penises. What do they have instead? | Cloacas |
| How long can stored TURKEY sperm stay viable? | 30 days |
| How long can stored CHICKEN sperm stay viable? | 10 days |
| What is a cryptorchid? | An animal whos testes stay inside the abdomen |
| What does castration do? | Prevents sperm and testosterone production by removing the testes |
| What is the physiological desire to mate (in female animals) called? | Estrus |
| What do the ovaries do? | Produce ovum/ova and estrogen |
| What does Corpus Luteum produce? | progesterone |
| What do the oviduct do? | Connects to each uterine horn, transports sperm and ova, and is the site of fertilization |
| What does the uterus do? | Incubates the fetus, moves sperm to the oviducts, and contracts to birth the fetus. |
| What is the cervix? | A hard barrier between the vagina and uterine body. |
| Where do boars & stallions deposit semen? | Into the cervix |
| Where do bulls & rams deposit semen? | Into the vagina |
| What is the estrous cycle? | A cyclic pattern of ovarian function after puberty |
| What is the average length of the estrous cycle for SHEEP? | 14 days |
| What is the average length of the estrous cycle for CATTLE? | 21 days |
| What does oogenesis produce? | Estrogen and FSH |
| What does Ovulation produce? | LH, CH, CL, CA, PGF |
| What is LH? | Lutenizing hormoe |
| What is CH? | Corpus Homoragicum |
| What is CL? | Corpus Luteum |
| What is CA? | Corpus Albacans |
| What is PGF? | Placental growth factor/A hormone produced that kills CL |
| When is LH produced in swine? | 40 hours after the onset of estrous |
| What is the sequence of events for the estrous cycle? | Oogenesis, Ovulation, Fertilization, Placentation, Implantation, Gestation, Parturition |
| What is the gestation period for CATTLE? | 282 days |
| What is the gestation period for SWINE? | 114 days |
| What is the gestation period for the EWE? | 150 days |
| What is the gestation period for the MARE? | 336 days |
| Which ovary and oviduct atrophies in poultry? | Right |
| What is the incubation period for CHICKENS? | 21 days |
| What is the incubation period for TURKEYS? | 28 days |
| What is AI (Artificial Insemination)? | Impregnating an animal via sperm, done by humans |
| What is estrus syncing? | Syncing estrus cycles so many animals are in estrus at the same time |
| What is superovulation? | Making a heifer produce more than one calf |
| What is embryo transferring? | Transferring an embryo from one uterus to another |
| What animals are monogastric (having one stomach)? | Pigs, Horses, and Poultry |
| What animals are ruminants (having a rumen)? | Cattle, goats, and sheep |
| What is the pattern in which food moves through the ruminant stomach? | Rumen, Reticulum, Omasum, Abomasum |
| What organ do poultry have that other animals do not? | A crop |
| When does the rumen start to function? | 6 to 8 weeks old |
| What feed types are high in energy? | Grains |
| What feed types are high in protein? | Roughages, Forages, Protein |
| What types of feeds are high in fiber? | Roughages, Forages |
| What grain has 100% energy? | Corn |
| What is the protein % of corn? | 10.1% |
| What are two types of roughages? | Silage and grass |
| What is a type of forage? | Hay |
| What are the types of fats & oils? | Animal fats and plant oils |
| What are two types of plant-based protein feeds? | Soybean meal and Cottonseed meal |
| What are two types of animal-based protein feeds? | Meat meal and Fish Meal |
| What is the most important and available nutrient? | Water |
| What is the primary ingredient in carbs? | Starch |
| What are the nutrient requirements for nonruminants? | Low fiber, high energy |
| What are the nutrient requirements for ruminants? | high fiber, low energy |
| How is daily feed consumption measured? | As a percent of the animal's body weight. |
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